Home extensions in Bridport
We design and build house extensions for homes in Bridport and the surrounding Dorset area, with guide prices adjusted for the region.
- Postcode districtsDT6
- Price regionSouth West England (×1.02)
- Planning rulesEngland
- Site visitFree, no obligation
Do extensions in Bridport need planning permission?
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In England a two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for Bridport houses?
South West homes range from terraced streets in the cities to stone cottages and bungalows in the countryside, and conservation areas are common in historic centres.
Depending on the plot, single-storey rear extensions and orangery extensions are often the strongest options, with annexe extensions worth considering where there is room.
What extensions cost in Bridport
Prices on this page use our South West England factor of ×1.02, include VAT at 20% and cover the build; your written price follows a survey and agreed drawings.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Double-storey extensions | 32 m² | £58,500 – £77,000 |
| Single-storey rear extensions | 20 m² | £41,500 – £53,500 |
| Conservatory replacement extensions | 14 m² | £30,500 – £39,500 |
| Orangery extensions | 16 m² | £45,500 – £57,500 |
| Wraparound extensions | 25 m² | £58,500 – £74,000 |
| Kitchen extensions | 20 m² | £42,500 – £54,500 |
| Side return extensions | 11 m² | £26,500 – £34,000 |
Where we work near Bridport
Across DT6, we can visit, measure and advise. Neighbouring towns we cover include Dorchester (15 miles), Weymouth (16 miles), Poole (35 miles), Wimborne Minster (35 miles), Swanage (36 miles). Just over the Somerset border, Yeovil is about 15 miles away.
Extension types and starting prices
- Pitched roof extensions · from £22,500
- Timber frame extensions · from £21,000
- Utility and boot room extensions · from £14,000
- Side return extensions · from £18,000
- Porch extensions · from £4,050
- Single-storey rear extensions · from £21,000
- Orangery extensions · from £30,500
- Planning permission for extensions · from £350
- Glass box extensions · from £30,500
- Home office extensions · from £16,000
- Wraparound extensions · from £36,500
- Conservatory replacement extensions · from £20,000
- Bungalow extensions · from £26,500
- Extensions over a garage · from £24,000
- Annexe extensions · from £56,000
- Extension plans and drawings · from £1,200
- Bedroom extensions · from £26,500
- Double-storey extensions · from £38,500
- Flat roof extensions · from £21,000
- Side extensions · from £22,000
- Building regulations for extensions · from £900
- Kitchen extensions · from £27,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Bridport
How much does an extension cost in Bridport?
Using our South West England factor (×1.02), a standard-spec single-storey extension of 20 m² is a guide £41,500 to £53,500 including VAT, and a 32 m² two-storey extension £58,500 to £77,000. Your written price follows the survey.
Can I get a price before anyone visits?
Yes. This page shows guide prices adjusted for Bridport, and the guide-price tool gives a range for your own size and finish in about a minute.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do you cover all of Bridport?
Yes, including the surrounding parts of Dorset. Site visits are free and there is no obligation.
Book a free site visit in Bridport
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.